But he knows he must maintain his form if he's to put what could be a full stop on his career on home soil at the World Cup in early 2015.
"I was really pleased with my form in England in the Champions Trophy and the series against England," he said.
"I'm happy with what I've contributed to the group but I'm definitely not getting too far ahead of myself."
For one thing, there's the developing depth in the fast-medium department which Mills is delighted to see.
The 34-year-old knows the New Zealand selectors may want to get as much experience into the younger bowlers as they can before the World Cup. Still, accumulated wisdom counts for plenty.
"There's a lot of water to go under the bridge between now and then and people may leapfrog me. But I will be doing my damnedest to try and be involved," he said.
He aims to stick to a plan which has served him well in Bangladesh in the past.
"It's a tough environment to bowl in, the heat, humidity and flat wickets, and they've become a far better side over the last decade.
"I try to be really specific with my plans, bowl as straight as possible, try to be hard on myself not to bowl half volleys or balls which give the batsmen width."